diff --git a/manual/docker/cluster/env b/manual/docker/cluster/env
index c428803a..fd890a7a 100644
--- a/manual/docker/cluster/env
+++ b/manual/docker/cluster/env
@@ -34,5 +34,4 @@ INIT_S3_AWS_REGION=us-east-1
 INIT_S3_HOST=s3.us-east-1.amazonaws.com
 INIT_S3_USE_HTTPS=true
 
-SEAFILE_LOG_TO_STDOUT=false
 JWT_PRIVATE_KEY=<your jwt private key>
\ No newline at end of file
diff --git a/manual/docker/cluster/seafile-server.yml b/manual/docker/cluster/seafile-server.yml
index 8cf2accf..14fa45d2 100644
--- a/manual/docker/cluster/seafile-server.yml
+++ b/manual/docker/cluster/seafile-server.yml
@@ -35,5 +35,4 @@ services:
       - SITE_ROOT=${SITE_ROOT:-/}
       - ENABLE_SEADOC=${ENABLE_SEADOC:-false}
       - SEADOC_SERVER_URL=${SEADOC_SERVER_URL:-http://example.example.com/sdoc-server}
-      - SEAFILE_LOG_TO_STDOUT=${SEAFILE_LOG_TO_STDOUT:-false}